Income Taxes (Components Of Provision For Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax expense (benefit):
Federal	$ 1,226.4	$ 1,060.2	$ 1,150.4
State and local	(42.6)	95.7	21.6
Total current tax expense	1,183.8	1,155.9	1,172.0
Deferred tax expense	22.1	51.4	139.2
Total income tax expense	$ 1,205.9	$ 1,207.3	$ 1,311.2